Glow Plugs; Drive Belt Adjustment - Westerbeke 22.0 EDE 60Hz Operator's Manual

ENGINE ADJUSTMENTS
GLOW PLUGS
GLOW PLUG
_..-CONNECTION STRAP
FUEL INJECTOR
A
WARNING:
These glow plugs will become very hot
to the touch. Be careful not to burn your fingers when
testing plugs.
To inspect the plug, remove the electrical terminal connections,
then unscrew or unclamp each plug from the cylinder head.
Thoroughly clean each plug's tip and threads with a soft brush
and cleaning solution to remove all the carbon and oil deposits.
While cleaning, examine the tip for wear and bum erosion; if it
has eroded too much, replace the plug.
An accurate way to test glow plugs is with an ohmmeter.
Touch one prod to the glow plug's wire connection, and the
other to the body of the glow plug, as shown. A good glow
plug will have a 0.90 ohm resistance. This method can be used
with the plug in or out of the engine. You can also use an
ammeter to test the power drain (12-13 amps per plug)
Re-install the plugs in the engine and test them again. The
plugs should get very hot (at the terminal end) within 7 to 15
seconds. If the plugs don't heat up quickly, check for a short
circuit. When reinstalling the glow plugs, use anti-seize
compound on the threads.
BODY
TIGHTENING TORQUE
2.0-2.5 m-kg (14.5 -18.0 ft-lb)
DRIVE BELT ADJUSTMENT
Proper inspection, service and
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is important for the efficient operation of your engine (see
Drive Belts under MAINTENANCE SCHEDULE).
Drive belts must be properly tensioned. Loose drive belts
will not provide proper alternator charging and will
eventually damage the alternator. Drive belts that are too
tight will pull the alternator out of aligmnent and/or cause
the alternator to wear out prematurely. Excessive drive belt
tension can also cause rapid wear of the belt and reduce the
service life of the coolant pump's bearing. A slack belt or the
presence of oil on the belt can cause belt slipping, resulting
in high operating temperatures and tachometer variations.
The drive belt is properly adjusted if the belt can be deflected
no less than 3/8 inch (lOmm) and no more than 1/2 inch
(12mm) as the belt is depressed with the thumb at the mid-
point between the two pulleys on the longest span of the belt.
A spare belt or belts should always be carried on board.
A
WARNING:
Never attempt to check or adjust the
drive belt's tension while the engine is in operation.
Adjusting Belt Tension
1.
Loosen the alternator adjusting strap bolt and the base
mounting bolt.
2. With the belt loose, inspect for wear, cracks and frayC'n
edges.
3. Pivot the alternator on the base mounting bolt to the left
or right as required, to loosen or tighten.
4.
Tighten the base mounting bolt and the adjusting strap
bolt.
5. Run the engine for about 5 minutes, then shut down and
recheck the belt tensions.
ADJUSTING STRAP
BOLT
ALTERNATOR
In case of severe vibrations and detonation noise, have the
injectors checked and overhauled by an authorized fuel
injection service center. Poor fuel quality, contaminant's and
loss of positive fuel pressure to the injection pump can result
in injector faults. Since fuel injectors must be serviced in a
clean room environment, it is best to carry at least one extra
injector as a spare should a problem occur. Refer to the
following page for injector testing.
Engines & Generators
27